1

R/o Lynch's:
All of these are common, and there's no classic syndrome in which they tend to run together other than lynch's for which you may get checked. Lifraumeni and related cancer-family syndromes feature patients presenting at early ages or with unusual tumors. Familial pancreatic cancer usually features pancreatitis as well, and familial colon cancer usually features multiple polyps.
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Cancer is a group of diseases that is characterized by uncontrolled cell growth leading to invasion of surrounding tissues that spread to other parts of the body. Cancer can begin anywhere in the body and is usually related to one or more genetic mutations that allow normal cells to become malignant by interfering with internal cellular control mechanisms, such as programmed cell death or by preventing repair of DNA damage.
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2

Very low:
However, I am curious why you ask. I suspect it is because of rectal bleeding (mentioned in your conditions), which is a medical problem you need to get evaluated right away, to find out what is causing it.
Please see your doctor for a complete history and physical, and to get properly evaluated for your rectal bleeding and any other medical problems you may have.
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3

Yes :
Colon cancer can be genetic and there a re criteria that can apply and genetic testing is available. There is also a blood level you can check called cea . For stomach cancer like adenocarcina there is no genetic testing. There are familial syndromes like men that can cause stomach tumors called gastronomas or ze syndrome. If concerned can talk to your doctor. But overall these things very rare.
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4

Not directly usually:
There is debate about how closely these 2 cancers are related. Both have hereditary natures and are more common generally in obese patients. Both often begin with more benign precursor lesions like dcis for breast cancer and benign polyps for colon cancer. Both are very common but there is little evidence that having either predisposes to having the other.
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5

Important:
Family history of cancer is very important information. If your family history of colon cancer is significant ( multiple family members with colon cancer especially at younger age) -then you would need to be screen for colon cancer- started approximately 10 years earlier than the age of the youngest person in the family got diagnosed with colon cancer.You also need to see a genetician if history +.
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6

Unlikely:
This would be very unlikely. Might be seen in certain syndromes such as familial adenomatous polyposis (fap) syndrome. Colon cancer typically presents at a later stage in life. The median age of diagnosis of colorectal cancer is around 69 yrs. Approx. 0.1% were diagnosed under age 20. Pretty unlikely. Certainly symptoms may warrant investigation, but again, likelihood is low.
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8

Some colon cancers:
Are hereditary. Vast majority are not. The two common hereditary forms of colon cancer are familial adneomatous polys and lynch syndrome. Let me reiterate that hereditary colon cancers are a minority. See this site for more info.
http://www.mskcc.org/cancer-care/hereditary-genetics/inherited-risk-colorectal.
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10

Can be the same:
The intestines are a group of structures including stomach, small intestine and large intestine (which is the colon). Cancers can form in any of these sites, but large intestine (colon) cancer is most common. So colon cancer is a type of intestinal cancer.
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11

No:
Colon Cancer is induced for the most part in non hereditary disease by viral transfection. The most common organism is the polyoma virus. Ovarian cancer is not derived from this viral event. Colon cancer begins in the mucosa of the bowel where ovarian Ca is an epithelial disease similar to that of peritoneal carcinomatosis. The only relationship is when colon metastasizes to ovary.
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12

Depends on what you:
It is hard to know what you mean. If you mean hereditary, they typically are not except about 5 to 10% of the time there is cancer of the same type in one of the first degree relatives. But cancer is a common disease which will likely affect one in 3 people during a life time.
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13

Duration dependent:
Colorectal cancer risk 5 to 10 percent after 20 years and 12 to 20 percent after 30 years of disease. Also depends on extent of disease. This with disease proximal to hepatic flexure have a greater risk than those with left colon involvement only. (UpToDate) Thanks for trusting HealthTap!
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14

Genetic mutations:
HNPCC or hereditary nonpolyposis colorectal cancer is an autosomal dominant genetic condition that has a high risk of colon cancer The disease first described by Lynch and is associated with other cancers including endometrial ovary and stomach. The increased risk is due to inherited mutations that impair DNA mismatch repair. .Individuals with HNPCC have an 80% lifetime risk for colon ca.
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15

See below:
Anus is about 3-4 cm long from skin to the rectum which is the last part of colon. Colon is lined by columnar lining and cancer of this is very common and runs in families. Cancer arising in the anal skin which is squamous kind is more like skin cancer. Treatment is very different as is prognosis.
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17

Somewhat:
Colon cancer and rectal caner are usually an adenocarcinoma. They are both located in the large intestine. The difference is that they are treated differently. Sometimes rectal cancer is first treated with radiation and chemotherapy before surgery. Colon cancer often does not use radiation therapy. Both cancers use surgery to remove the cancer.
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18

Hypochondrasis:
I feel your distress about having Colon cancer.
Relax about “No family history. Cancer or IBS”
Feel good about lack of abdominal pain, bloody stools, diarrhea alternating with constipation, or severe constipation.
Do not be victim of severe health anxiety, Be Captain of your thoughts, feelings and behaviors.
See a Psychiatrist for Therapy for anxiety due to stresses; coping skills and
medication.
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20

Yes and no:
Both are adenocarcinomas of the 'large intestine' broadly speaking. However, due to several anatomic differences, colon and rectal cancer behave differently. For that reason the preoperative staging is different and the treatment can be different (surgery +/-chemotherapy for colon cancer, surgery +/- chemoradiation therapy for rectal cancer). The functional outcomes are different as well.
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The colon is another term for the large intestine. This is the final portion of the digestive system, responsible for absorbing water and storing stool before evacuation. It is divided into sections described as cecum; ascending, transverse, descending and sigmoid colons; and rectum.
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